<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			.dd1 form{
				width: 502px;
				height: 302px;
				border: 1px solid black;
				position: fixed;
				left: 50%;
				top: 50%;
				margin-left: -251px;
				margin-top: -151px;
			}
			label{
				width: 100px;
				float: left;
				text-align: right;
			}
		</style>
	</head>
	<body>
		<div class="dd1">
			<form action="" method="get">
				<h3>用户登陆</h3>
				<div>
					<label>用户名：</label><input type="text" name="user" id="password" value="" /><br />
					<label>密码：</label><input type="password" name="pwd" id="" value="" />
				</div>
				<input type="submit" value="提交" class="dd2"/>
				<input type="submit" value="重置" class="dd3"/>
			</form>
		</div>
	</body>
</html>
